Dental chair



(No Model.) 2 SheetsSheet 12.

Z. B. MOORMAN. DENTAL CHAIR.

No. 396,828. Patented Jan. 29, 1889.

?6 vwwwoz, 351 'attozwm o UNITED STATES PATENT @EEicE.

ZACH l-i. UOORMAN, OE HONEY GROVE, TEXAS.

DENTAL CHAIR.

SPECIFICATION forming part of Letters Patent No. 396,828, dated January 29, 1889. Application filed June 21, 1888, Serial No. 277,705. (No model.)

provements in Dental Chairs, of which the following is a specification.

My invention relates to improvements in dental chairs, having for its object a simple and convenient chair which may be folded to render it portable, so that it may be carried from place to place by the dentist when his practice is away from his office.

The invention consists in. a certain novel construction and arrangement of devices,fully set forth hereinafter in connection with the accompan yin draw ings, wh erein- Figure 1 is a perspective view of the chair in its operative position. Fig. 2 is a central vertical sectional view of the same. Fig. 3 is a view of the chair in its folded position.

Referring to the drawings, A A and B .15 represent, respectively, the front and rear legs of the chair, which are pivoted together at their n pper en ds and are conneotedin pairs at their lower ends by cross-bars u and Z); and A A and B B represent upward extensions of the said legs, which are connected together at their upper ends by the cross-bars a and t.

The seat C provided at its rear edge with the dowmvardly-extending loops (1 c, which are mounted on the crossbar a, and it is provided at its front edge with the hooks c c which are engaged in staples or keepers c c on the inner or rear side of the cross-bar l).

The back I) of the chair is provided with the side bars, (I 1/, which are hinged at their lower ends to the upper ends of the extensions A A, respectively, whereby the abutting ends'of the said bars and extensions prevent the back from swinging forward beyond the vertical position, but allow it to be folded baekwardly, as will be clearly seen by reference to the drawings.

E E represent adjustable and flexible side arms, which are conneett-nl at their upper ends to the side bars, (I (7, near their upper ends, and are provided at their lower ends with the snap-hooks e 6, adapted to engage suitable loops or keepers, e e, on the upper ends of the extensions B B. The said side arms are preferz-rbl y straps, in which case they are in'ovided at intermediate points with the buckles 1* 1*, whereby they may be lengthened or shtn'teued at will to produce any desired inclination of the back of the chair.

G represents the head-rest, which is pivoted to the upper end of the 'vertically-adjustable bar G, which slides in suitable guides, g g, on the rearside of the back, and is locked in the desi red position by the thu nib-screws g. The head-rest is nmunted loosely on the upper end of the adjlisting-bar to enable it to adjust itself to the position of the head of the patient.

The foot-rest .H is provided with the rearwardly-extending arms 7t 71, which are pivoted at their ends to the legs A A, below their pivots; and I I rtpresent adjustingarms, which are pivoted to the lower side of the foot-rest and are provided at their lower ends with the lateral studs or projections K, engaging the ratchet-teeth L on the front sides of the legs A A, whereby the said footrest may be arrangcnl at any desired elevation.

To fold the chair, the foot-rest is raised and its pivoted arms 7L h are folded between the legs A A, and the bars I l are folded between the arms 71 h, the seat is released at its front edge and allowed to drop in front of the footrest, and the upper ends of the extension A B are drawn together, thereby allowing the back to swing rearward and fold over the rear side of: the foot-rest. In this way the chair is folded into very compact shape, so that it may be readily ca'irried in the hand, and when desired for use it maybe quickly and readily adj u sted.

Having claim 1. In a dental chair, the combination of the legs A and B, pivoted. together and provided with the extensions A and B, which are connected at their upper ends by the cross-bars a and Z", the seat pivotall y connected to the cross-bar a and engaged with the oross-bar l), the foot-rest provided with arms h 71, pivoted to the inner sides of the A A, and havin legs I engaging ratchets on the said legs, the backwardly-folding back I), pivoted to the upper ends of the extensions A, and the flexible and extensible arnis E E, conthus described the invention, I

nected at their ends, respectively, to the back and the upper ends of the extensions B, substantially as specified.

2. In a dental chair, the legs A and B, pivoted together, the seat and the back, in combination with the foot-rest having the arms h h, pivoted to the inner sides of the legs A, the swinging arms I, mounted on the foot-rest and provided at. their lower ends with the TO lateral studs or projections K, adapted to engage ratehets on the legs A to hold the footrest at the desired inclination, substantially my own I have hereto affixed my signature I 5 in presence of two Witnesses.

ZACH B. MOORMAN.

Vitnesses:

W. H. LEMoNs, C. W. KINKEAD. 

